{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,31]],"date-time":"2026-03-31T16:31:38Z","timestamp":1774974698706,"version":"3.50.1"},"reference-count":33,"publisher":"MDPI AG","issue":"14","license":[{"start":{"date-parts":[[2021,7,16]],"date-time":"2021-07-16T00:00:00Z","timestamp":1626393600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100000266","name":"Engineering and Physical Sciences Research Council","doi-asserted-by":"publisher","award":["EP\/M009106\/1"],"award-info":[{"award-number":["EP\/M009106\/1"]}],"id":[{"id":"10.13039\/501100000266","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100000266","name":"Engineering and Physical Sciences Research Council","doi-asserted-by":"publisher","award":["1881287"],"award-info":[{"award-number":["1881287"]}],"id":[{"id":"10.13039\/501100000266","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>This article elucidates the need to consider the inherent spatial transfer function (blur), of any thermographic instrument used to measure thermal fields. Infrared thermographic data were acquired from a modified, commercial, laser-based powder bed fusion printer. A validated methodology was used to correct for spatial transfer function errors in the measured thermal fields. The methodology was found to make a difference of 40% to the measured signal levels and a 174 \u00b0C difference to the calculated effective temperature. The spatial gradients in the processed thermal fields were found to increase significantly. These corrections make a significant difference to the accuracy of validation data for process and microstructure modeling. We demonstrate the need for consideration of image blur when quantifying the thermal fields in laser-based powder bed fusion in this work.<\/jats:p>","DOI":"10.3390\/s21144859","type":"journal-article","created":{"date-parts":[[2021,7,18]],"date-time":"2021-07-18T21:18:52Z","timestamp":1626643132000},"page":"4859","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Reconstruction of Microscopic Thermal Fields from Oversampled Infrared Images in Laser-Based Powder Bed Fusion"],"prefix":"10.3390","volume":"21","author":[{"given":"Leigh","family":"Stanger","sequence":"first","affiliation":[{"name":"Department of Electronic & Electrical Engineering, University of Sheffield, Pitt Street, Sheffield S14ET, UK"}]},{"given":"Thomas","family":"Rockett","sequence":"additional","affiliation":[{"name":"Department of Electronic & Electrical Engineering, University of Sheffield, Pitt Street, Sheffield S14ET, UK"}]},{"given":"Alistair","family":"Lyle","sequence":"additional","affiliation":[{"name":"Department of Materials Science & Engineering, University of Sheffield, Mappin Street, Sheffield S13JD, UK"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3486-3539","authenticated-orcid":false,"given":"Matthew","family":"Davies","sequence":"additional","affiliation":[{"name":"Department of Electronic & Electrical Engineering, University of Sheffield, Pitt Street, Sheffield S14ET, UK"}]},{"given":"Magnus","family":"Anderson","sequence":"additional","affiliation":[{"name":"Department of Materials Science & Engineering, University of Sheffield, Mappin Street, Sheffield S13JD, UK"}]},{"given":"Iain","family":"Todd","sequence":"additional","affiliation":[{"name":"Department of Materials Science & Engineering, University of Sheffield, Mappin Street, Sheffield S13JD, UK"}]},{"given":"Hector","family":"Basoalto","sequence":"additional","affiliation":[{"name":"Department of Materials Science & Engineering, University of Sheffield, Mappin Street, Sheffield S13JD, UK"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4242-1204","authenticated-orcid":false,"given":"Jon R.","family":"Willmott","sequence":"additional","affiliation":[{"name":"Department of Electronic & Electrical Engineering, University of Sheffield, Pitt Street, Sheffield S14ET, UK"}]}],"member":"1968","published-online":{"date-parts":[[2021,7,16]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Boone, N., Davies, M., Willmott, J.R., Marin-Reyes, H., and French, R. 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